At 100 ∘c the equilibrium constant for the reaction cocl2(g)←→co(g)+cl2(g) has the value kc=2.19×10−10. are the following mixtures of cocl2, co, and cl2 at 100 ∘c at equilibrium? if not, indicate the direction that the reaction must proceed to achieve equilibrium.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

Sorry i dont understand the question can you rephase it?

1) according to the law of conservation of mass ,in all chemical reactions total mass is unchanged